Meaning of imbecile

im•be•cile

Pronunciation: (im'bu-sil, -sul or, esp. Brit., -sēl"), [key]
— n.
  1. a person of the second order in a former classification of mental retardation, above the level of idiocy, having a mental age of seven or eight years and an intelligence quotient of 25 to 50.
  2. a dunce; blockhead; dolt.
—adj.
  1. mentally feeble.
  2. showing mental feebleness or incapacity.
  3. stupid; silly; absurd.
  4. weak or feeble.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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